This seems like it's been well thought out. I like the use of completing circuits to indicate to users whether or not they've done something correctly- this is a technique that typically works well in Boda Borg/5 Wits. The design work was well thought out and explained in this concept refinement. It would have been useful to see how the bridges actually connect to pieces because that to me is the most unclear part of the current design.

This CAD has been very cleverly designed to be a good system model. The design clearly overviews all the key elements and would function as described.

The interior wires might be a pain to fabricate and assemble. Could this maybe be done through external copper tape that forms some of the exterior decoration of the building to make the manufacture a lot easier? I'm also a little worried about the curved building and having it play nicely with the external support, maybe having all rectangular prisms makes it more robust (and makes it less obvious which pieces are for that one building)

5 Wits also might think the center piston adds too much complexity without much additional user experience benefit, so maybe the game could be designed to just omit that.

The render of the CAD looks very professional, and I appreciated the numerous views with internal geometry. It would have been helpful to see a larger view of the connection points between the sections, because it looks like there is a lot of cool detail there that is lost in the overall view!

I also wish there was a detailed view about how the LEDs would be integrated into the base, as it might be difficult to make them robust to people stepping them.

I appreciated having both the CAD and more simple schematic view to see how everything was connected, as well.